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Spatially-orthogonal all-optical modulation three-port device

A three-terminal device and optical modulation technology, which is applied in the field of optical communication, can solve the problems of modulation rate limitation, etc., and achieve the effect of wide selectivity

Inactive Publication Date: 2018-08-03
SICHUAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the carriers in silicon or germanium participate in the modulation process, the modulation rate is limited

Method used

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  • Spatially-orthogonal all-optical modulation three-port device
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Embodiment Construction

[0025] The preparation and use of a spatially orthogonal all-optical modulation three-terminal device comprises the following steps;

[0026] Step 1. Stretch the single-mode fiber by flame heating and melting. The model of the single-mode fiber used is SMF-28e(R). The diameter of the rear micro-nano fiber is about 7 μm.

[0027] Step 2. Apply graphene film on Supermarket copper substrate 13 C Spin-coat PMMA, and transfer graphene to deionized water by wet transfer method, cover the graphene with PMMA on the micro-nano optical fiber, after drying, bake at 100°C for 40 minutes, then soak in acetone for about 5 minutes, Remove PMMA.

[0028] Step 3: Assemble the optical fiber in step 2 with two FC connectors and a lens, and fix the three-terminal device to form a usable three-terminal device.

[0029] Step 4: Experimental testing is carried out by inputting pump light and 1047-1096nm ASE signal light to the three-terminal device. In the actual use of the three-terminal device...

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Abstract

The invention designs a spatially-orthogonal all-optical modulation three-port device. A method comprises the steps that (1) a flame heating method is utilized to draw single-mode optical fibers, andthe manufactured micro-nano optical fibers are thin enough to make the ratio of evanescent waves high enough; (2) the micro-nano optical fibers are covered with graphene with a certain length; (3) themicro-nano optical fibers, two FC connectors and a lenticular lens are assembled for formation; (4) pump light and signal light are input to the three-port device; (5) according to a spectrum obtained by an output port of the three-port device, the modulated bandwidth, modulation depth and response time are measured. According to the device, the signal light is modulated by utilizing a spatial coupling mode, the spatially-orthogonal all-optical modulation three-port device is a novel three-port modulation device and has the advantages that the spectral width is extremely high, the output signal light is clean, the selectivity of the pump light is wide, the response speed is high, and the response time is not limited by the covering length of graphene, and the device can play an excellentrole in all-optical communication.

Description

technical field [0001] The invention belongs to the all-optical modulation technology in the field of optical communication, in particular to a space-orthogonal, all-optical, three-port device modulated by graphene. Background technique [0002] As a novel two-dimensional material, graphene has peculiar electrical and optical properties. It is called a "super material" and has received extensive attention and applications. It has been reported in biomedicine, machinery and mode-locked lasers . Since graphene has a zero-bandgap linear structure, it can work in a frequency band of 300 nm to 6000 nm or even wider. Some researchers have applied graphene's performance to broadband supercontinuum modulators and ultra-broadband absorbers. among. There have been reports on broadband supercontinuum modulators and ultra-broadband absorbers. [0003] Graphene electrons have a linear energy-momentum relationship, which is similar to the electron transport properties of two-dimensiona...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/01
Inventor 冯国英杨莫愁莫军
Owner SICHUAN UNIV
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